package nowcoder.nc28;

import java.util.HashMap;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;

public class Main {
    public static void main(String[] args) {

//        System.out.println(new Main().minCoverSubString("ADOBECODEBANC", "ABC"));
//        System.out.println(new Main().minCoverSubString("a", "a"));
//        System.out.println(new Main().minCoverSubString("a", "aa"));
        System.out.println(new Main().minCoverSubString("ab", "a"));
    }

    public String minCoverSubString(String s, String t){

        return ";";
    }

    private String findSubString(String s, Map<Character,Integer> tCnt) {
       return "";
    }

    private boolean check(Map<Character, Integer> subMap) {

        return subMap.size()==0;//0
    }

}
